211002202122121 has 16 divisors (see below), whose sum is σ = 226240081214400. Its totient is φ = 196211851841088.

The previous prime is 211002202122097. The next prime is 211002202122163. The reversal of 211002202122121 is 121221202200112.

It is a cyclic number.

It is not a de Polignac number, because 211002202122121 - 2⁷ = 211002202121993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211002202122521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475872850 + ... + 476316043.

It is an arithmetic number, because the mean of its divisors is an integer number (14140005075900).

Almost surely, 2^{211002202122121} is an apocalyptic number.

It is an amenable number.

211002202122121 is a deficient number, since it is larger than the sum of its proper divisors (15237879092279).

211002202122121 is a wasteful number, since it uses less digits than its factorization.

211002202122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952189128.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 211002202122121 its reverse (121221202200112), we get a palindrome (332223404322233).

The spelling of 211002202122121 in words is "two hundred eleven trillion, two billion, two hundred two million, one hundred twenty-two thousand, one hundred twenty-one".